CN103413960A - Flow cell and flow cell stack - Google Patents
Flow cell and flow cell stack Download PDFInfo
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- CN103413960A CN103413960A CN2013103761156A CN201310376115A CN103413960A CN 103413960 A CN103413960 A CN 103413960A CN 2013103761156 A CN2013103761156 A CN 2013103761156A CN 201310376115 A CN201310376115 A CN 201310376115A CN 103413960 A CN103413960 A CN 103413960A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 41
- 239000003792 electrolyte Substances 0.000 claims description 24
- 239000003014 ion exchange membrane Substances 0.000 abstract 5
- 230000003044 adaptive effect Effects 0.000 abstract 1
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 238000005342 ion exchange Methods 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 7
- UQSQSQZYBQSBJZ-UHFFFAOYSA-N fluorosulfonic acid Chemical compound OS(F)(=O)=O UQSQSQZYBQSBJZ-UHFFFAOYSA-N 0.000 description 7
- 239000002131 composite material Substances 0.000 description 5
- 238000003487 electrochemical reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000012528 membrane Substances 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
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- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 239000002322 conducting polymer Substances 0.000 description 2
- 229920001940 conductive polymer Polymers 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 150000001721 carbon Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The invention provides a flow cell and a flow cell stack. The flow cell comprises a first bipolar plate, a second bipolar plate, two flow frames, two electrodes and an ion exchange membrane, wherein the ion exchange membrane is clamped between the two electrodes; the two electrodes are embedded in cavities of the two flow frames respectively; a reaction space is formed between the opposite current collection surfaces of the first bipolar plate and the second bipolar plate; the current collection surface of the first bipolar plate comprises a first concave part; the current collection surface of the second bipolar plate comprises a first convex part which is matched with the first concave part; the two electrodes and the ion exchange membrane form a concave-convex structure which is adaptive to the shape of the reaction space, between the first bipolar plate and the second bipolar plate. Since the electrodes and the ion exchange membrane form the concave-convex structure, the areas of the electrodes and the ion exchange membrane are increased, the internal resistance of the flow cell is reduced, the current density of the flow cell is increased, and the purpose of improving the efficiency and the power of the flow cell can be achieved.
Description
Technical field
The present invention relates to field of batteries, more specifically, relate to a kind of flow battery and liquid stream battery stack.
Background technology
As depicted in figs. 1 and 2, flow battery of the prior art comprises the first bipolar plates 10 ', the second bipolar plates 20 ', two liquid flow frames 40 ', two electrodes 50 ' and amberplex 60 ', amberplex 60 ' is clamped between two electrodes 50 ', two electrodes 50 ' are embedded respectively in the cavity of two liquid flow frames 40 ', and two liquid flow frames 40 ' are clamped between the first bipolar plates 10 ' and the second bipolar plates 20 '.When the flow battery of a plurality of said structures stacks when arranging and assembling successively, form liquid stream battery stack.
The first bipolar plates 10 ' of the prior art, the second bipolar plates 20 ', two electrodes 50 ' and amberplex 60 ' are planarized structure.Under the assembling pressure-acting of liquid stream battery stack, the first bipolar plates 10 ' and the second bipolar plates 20 ' and two electrode 50 ' close contacts, and two electrodes 50 ' fit tightly with amberplex 60 '.Two electrodes 50 ' are the places that electrolyte carries out the charge and discharge reaction, the area of electrode 50 ' has determined output current and the power density of liquid stream battery stack, amberplex 60 ' is as the main source of the internal resistance of liquid stream battery stack, and voltage efficiency and the energy efficiency of liquid stream battery stack had to material impact.
In prior art, the area of two electrodes 50 ' and amberplex 60 ' is limited, cause discharging and recharging that response area is limited, the effective ion exchange area is little in flow battery, flow battery charging and discharging currents density is on the low side, internal resistance is large, has restricted the lifting of liquid stream battery stack efficiency and power.
Summary of the invention
The present invention aims to provide a kind of flow battery and liquid stream battery stack, with the efficiency of the flow battery that solves prior art and the problem that power is difficult to improve.
For solving the problems of the technologies described above, according to an aspect of the present invention, a kind of flow battery is provided, comprise the first bipolar plates, the second bipolar plates, two liquid flow frames, two electrodes and amberplex, amberplex is clamped between two electrodes, two electrodes are embedded respectively in the cavity of two liquid flow frames, between the afflux respect to one another surface of the first bipolar plates and the second bipolar plates, form reaction compartment, the afflux surface of the first bipolar plates comprises the first recess, the afflux surface of the second bipolar plates comprises the first protuberance coordinated with the first recess, two electrodes and the concaveconvex structure that amberplex forms between the first bipolar plates and the second bipolar plates and the reaction compartment shape adapts.
Further, the first recess is bar shaped, and the two ends of the first recess extend to the edge of the first bipolar plates on the afflux surface of the first bipolar plates.
Further, the first recess is a plurality of, and a plurality of the first recesses arrange at intervals.
Further, the first recess has U-shaped or V-arrangement cross section.
Further, the first recess is block, and the first recess is a plurality of, and a plurality of the first recesses arrange at intervals along first direction and second direction, have angle between first direction and second direction.
Further, the afflux surface of the first bipolar plates also comprises the second protuberance, and the afflux surface of the second bipolar plates also comprises the second recess coordinated with the second protuberance.
Further, the first recess and the second protuberance are bulk, and the first recess and the second protuberance are a plurality of, and the second protuberance and the first recess arrange at intervals, a plurality of the first recesses and a plurality of the second protuberance are arranged alternately successively along first direction and second direction, have angle between first direction and second direction.
Further, the first recess and the second protuberance are bulk, and the first recess and the second protuberance are a plurality of, a plurality of the first recesses are divided into many groups, and the first recess in same group arranges at intervals along first direction, a plurality of the second protuberances are divided into many groups, and the second protuberance in same group arranges at intervals along first direction, and organize the first recess more and be arranged alternately successively along second direction with many groups the second protuberance, have angle between first direction and second direction.
Further, angle is 90 degree.
Further, the first recess and the first protuberance, the second protuberance and the second recess are cylindrical or hemisphere or cuboid.
Further, the afflux surface of the first bipolar plates also comprises spaced a plurality of the first electrolyte guiding gutters, and at least part of the first electrolyte guiding gutter is arranged on the position of the first recess; And/or the afflux surface of the second bipolar plates also comprises spaced a plurality of the second electrolyte guiding gutters, and at least part of the second electrolyte guiding gutter is arranged on the position of the first protuberance.
According to another aspect of the present invention, provide a kind of liquid stream battery stack, comprised a plurality of flow batteries, flow battery is above-mentioned flow battery.
Between the afflux respect to one another surface of the first bipolar plates in the present invention and the second bipolar plates, form reaction compartment, the afflux surface of the first bipolar plates comprises the first recess, the afflux surface of the second bipolar plates comprises the first protuberance coordinated with the first recess, two electrodes and the concaveconvex structure that amberplex forms between the first bipolar plates and the second bipolar plates and the reaction compartment shape adapts, thereby increased the area of electrode and amberplex, reduced the internal resistance of flow battery, increased the current density of flow battery, can reach the efficiency of raising flow battery and the purpose of power.Simultaneously, the flow battery in the present invention has characteristics simple in structure, low cost of manufacture.
The accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention the present invention does not form inappropriate limitation of the present invention for explaining.In the accompanying drawings:
Fig. 1 has schematically shown the structural representation of flow battery of the prior art;
Fig. 2 has schematically shown the cutaway view of flow battery of the prior art;
Fig. 3 has schematically shown the cutaway view of the flow battery in first embodiment in the present invention;
Fig. 4 has schematically shown the cutaway view of the flow battery in second embodiment in the present invention;
Fig. 5 has schematically shown the cutaway view of the flow battery in the 3rd embodiment in the present invention;
Fig. 6 has schematically shown the cutaway view of the flow battery in the 4th embodiment in the present invention; And
Fig. 7 has schematically shown the cutaway view of the flow battery in the 5th embodiment in the present invention.
Reference numeral in figure: 10, the first bipolar plates; 11, the first recess; 12, the second protuberance; 20, the second bipolar plates; 21, the first protuberance; 30, the first electrolyte guiding gutter; 31, the second electrolyte guiding gutter; 40, liquid flow frame; 50, electrode; 60, amberplex; The 10 ', first bipolar plates; The 20 ', second bipolar plates; 40 ', liquid flow frame; 50 ', electrode; 60 ', amberplex.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As first aspect of the present invention, provide a kind of flow battery.As shown in Figures 3 to 6, flow battery comprises: the first bipolar plates 10, the second bipolar plates 20, two liquid flow frames 40, two electrodes 50 and amberplex 60, amberplex 60 is clamped between two electrodes 50, two electrodes 50 are embedded respectively in the cavity of two liquid flow frames 40, between the afflux respect to one another surface of the first bipolar plates 10 and the second bipolar plates 20, form reaction compartment, the afflux surface of the first bipolar plates 10 comprises the first recess 11, the afflux surface of the second bipolar plates 20 comprises the first protuberance 21 coordinated with the first recess 11, two electrodes 50 and the concaveconvex structure that amberplex 60 forms between the first bipolar plates 10 and the second bipolar plates 20 and the reaction compartment shape adapts.
The first bipolar plates 10 in the present invention and the second bipolar plates 20 play collection and discharge and recharge reaction electric charge, compression electrodes 50.Preferably, the first bipolar plates 10 and the second bipolar plates 20 are that metal material or conducting polymer composite or carbon/polymer composite or material with carbon element are made.Metal material or conducting polymer composite or carbon/polymer composite or material with carbon element have the advantages that hardness is large, be easy to realize high-accuracy mechanical processing.Electrode 50 in the present invention is generally material with carbon element, metal material or the composite material with loose and porous structure.Amberplex 60 in the present invention is generally perfluoro sulfonic acid membrane, half fluosulfonic acid film or non-fluosulfonic acid film.Electrode 50 and amberplex 60 are soft in heterogeneity, under the effect of external force, have the yielding characteristics of appearance.Therefore, change the structure of the first bipolar plates 10 and the second bipolar plates 20, can control the area of two electrodes 50 of being pressed together between the first bipolar plates 10 and the second bipolar plates 20 and amberplex 60.
When the first bipolar plates 10 in use the present invention and the second bipolar plates 20, at first two electrodes 50 of plane and amberplex 60 are placed between the first bipolar plates 10 and the second bipolar plates 20, then make the first bipolar plates 10 and the second bipolar plates 20 under the assembly force of liquid stream battery stack, draw close and push electrode 50 and amberplex 60.After having assembled, electrode 50, amberplex 60, the first bipolar plates 10, the second bipolar plates 20 fits tightly each other and fully the coupling.Because the surface of the first bipolar plates 10 and the second bipolar plates 20 is non-flat design, thereby make electrode 50 and contact-making surface, the first bipolar plates 10 or second bipolar plates 20 of amberplex 60 all present nonplanar structure with the contact-making surface of electrode 50, thereby effectively increased, discharge and recharge response area and ion-exchange area, and then reduced the internal resistance of flow battery, improve efficiency and the power of flow battery.Simultaneously, the flow battery in the present invention has characteristics simple in structure, low cost of manufacture.
Preferably, the first recess 11 is bar shaped, and the two ends of the first recess 11 extend to the edge of the first bipolar plates 10 on the afflux surface of the first bipolar plates 10.Preferably, the strip structure of the first protuberance 21 for matching with the first recess 11.Because the first recess 11 is bar shaped, thereby more easily make to be pressed together between the first bipolar plates 10 and the second bipolar plates 20 after electrode 50 and amberplex 60 distortion.By width and the degree of depth of regulating the first recess 11, can change the area of electrode 50 and amberplex 60, make the efficiency of flow battery and power have controllability.
Preferably, the first recess 11 is a plurality of, and a plurality of the first recesses 11 arrange (please refer to Fig. 3 and Fig. 4) at intervals.Because the first recess 11 is a plurality of, thereby further increased the area of the electrode 50 that is pressed together between the first bipolar plates 10 and the second bipolar plates 20 and amberplex 60, thereby increased, discharge and recharge response area, reduced the internal resistance of flow battery, improved efficiency and the power of flow battery.
In embodiment as shown in Figure 3, the first bipolar plates 10 and the second bipolar plates 20 are conductive plasticss, and electrode 50 is material with carbon elements, and amberplex 60 is perfluoro sulfonic acid membranes.The mutual interlock of the first protuberance 21 of the first recess 11 of the first bipolar plates 10 and the second bipolar plates 20, the first bipolar plates 10 and the second bipolar plates 20 are complementary.When the first bipolar plates 10, two liquid flow frames 40, two electrodes 50, amberplex 60, the second bipolar plates 20 stacking, compress, assembled after, the intersection of the first bipolar plates 10, two electrodes 50, amberplex 60, the second bipolar plates 20 is the curved surface of mutual interlock, effective ion exchange area and electrochemical reaction area are surface area, therefore, increased and discharged and recharged response area, reduce the internal resistance of flow battery, improved efficiency and the power of flow battery.
Preferably, the first recess 11 has U-shaped or V-arrangement cross section.In embodiment as shown in Figure 3 and Figure 4, the cross section of the first recess 11 is U-shaped, thereby makes the afflux surface of the first bipolar plates 10 zigzag that is square.Because the first bipolar plates 10 has the half round saw dentalation, thereby when the first bipolar plates 10, two liquid flow frames 40, two electrodes 50, amberplex 60, the second bipolar plates 20 is stacking, compress, after having assembled, the first bipolar plates 10, two electrodes 50, amberplex 60, the intersection of the second bipolar plates 20 is the square jagged nonplanar structure of mutual interlock, effective ion exchange area and electrochemical reaction area are the surface area of square jagged nonplanar structure, therefore, increased and discharged and recharged response area, reduced the internal resistance of flow battery, efficiency and the power of flow battery have been improved.
In a not shown embodiment, the first recess 11 is a plurality of, and a plurality of the first recesses 11 are adjacent to arrange successively, and the junction of adjacent two the first recesses 11 is a straight line, thereby makes the afflux surface zigzag triangular in shape of the first bipolar plates 10.Have jagged the first bipolar plates 10 of triangle and contact with electrode 50, not only increased the area of electrode 50 with amberplex 60, also increased the contact area of the first bipolar plates 10 with electrode 50.Due to the area that has increased electrode 50, thereby increased and discharged and recharged response area, thereby improved the current density of flow battery, and then improved the power of flow battery.Due to the area that has increased amberplex 60, thereby increase the effective ion exchange area of flow battery, thereby reduced the internal resistance of flow battery, and then improved the efficiency of flow battery.
In a not shown embodiment, the first bipolar plates 10 and the second bipolar plates 20 are carbon/polymer composites, and electrode 50 is carbon papers, and amberplex 60 is perfluoro sulfonic acid membranes.The corrugated that the afflux surface of the first bipolar plates 10 and the second bipolar plates 20 is arranged to rise and fall, and the first bipolar plates 10 and the mutual interlock coupling of the second bipolar plates 20.When the first bipolar plates 10, two liquid flow frames 40, two electrodes 50, amberplex 60, the second bipolar plates 20 stacking, compress, assembled after, the intersection of the first bipolar plates 10, two electrodes 50, amberplex 60, the second bipolar plates 20 is the curved surface of mutual interlock, thereby effective ion exchange area and electrochemical reaction area are surface area, thereby increased, discharge and recharge response area, reduce the internal resistance of flow battery, improved efficiency and the power of flow battery.
Preferably, the first recess 11 is block, and the first recess 11 is a plurality of, and a plurality of the first recesses 11 arrange at intervals along first direction and second direction, have angle between first direction and second direction.In a not shown embodiment, on the afflux surface of the first bipolar plates 10, be provided with on the afflux surface of a plurality of the first recess 11, the second bipolar plates 20 and be provided with the first protuberance 21 coordinated with the first recess 11.Owing to having a plurality of the first recesses 11 and a plurality of the first protuberance 21, thereby increased the area of the electrode 50 that is pressed together between the first bipolar plates 10 and the second bipolar plates 20 and amberplex 60, thereby increased, discharge and recharge response area, reduce the internal resistance of flow battery, improved efficiency and the power of flow battery.
Preferably, the afflux surface of the first bipolar plates 10 also comprises that the afflux surface of the second protuberance 12, the second bipolar plates 20 also comprises the second recess coordinated with the second protuberance 12.Because the afflux surface of the first bipolar plates 10 also comprises the second protuberance 12, thereby further increased the contact area of the first bipolar plates 10 and electrode 50, thereby further increased the area of the electrode 50 that is pressed together between the first bipolar plates 10 and the second bipolar plates 20 and amberplex 60, and then further increased and discharged and recharged response area, reduce the internal resistance of flow battery, improved efficiency and the power of flow battery.
Preferably, as shown in Figure 5 and Figure 6, the first recess 11 and the second protuberance 12 are bulk, and the first recess 11 and the second protuberance 12 are a plurality of, and the second protuberance 12 and the first recess 11 setting separately, a plurality of the first recesses 11 are arranged alternately along first direction and second direction successively with a plurality of the second protuberances 12, have angle between first direction and second direction.Owing to there being a plurality of the first recesses 11 to coordinate with a plurality of the first protuberances 21, a plurality of the second protuberances 12 coordinate with a plurality of the second recesses, thereby further increased the area of the electrode 50 that is pressed together between the first bipolar plates 10 and the second bipolar plates 20 and amberplex 60, thereby further increased, discharge and recharge response area, reduce the internal resistance of flow battery, improved efficiency and the power of flow battery.Simultaneously, owing to there being a plurality of the first recesses 11 to coordinate with a plurality of the first protuberances 21, a plurality of the second protuberances 12 coordinate with a plurality of the second recesses, thereby make the flow battery after pressing combine more firmly, have reduced the problem that the changing of the relative positions in use occurs flow battery.
In embodiment as shown in Figure 5, the first bipolar plates 10 and the second bipolar plates 20 are high-density graphite plates, and electrode 50 is graphite soft felts, and amberplex 60 is perfluoro sulfonic acid membranes.A plurality of the first recesses 11 are arranged alternately along first direction and second direction successively with a plurality of the second protuberances 12, and on the second bipolar plates 20, have the first protuberance 21 coordinated with the first recess 11, the second recess coordinated with the second protuberance 12.The afflux surface of the first bipolar plates 10 and the second bipolar plates 20 is separated into sunk area and raised zones stragglyly, and sunk area and raised zones complementation, the first bipolar plates 10 and the mutual interlock of the second bipolar plates 20.When the first bipolar plates 10, two liquid flow frames 40, two electrodes 50, amberplex 60, the second bipolar plates 20 stacking, compress, assembled after, the intersection of the first bipolar plates 10, two electrodes 50, amberplex 60, the second bipolar plates 20 is the concavo-convex area of mutual interlock, thereby effective ion exchange area and electrochemical reaction area are concavo-convex area, thereby increased, discharge and recharge response area, reduce the internal resistance of flow battery, improved efficiency and the power of flow battery.
Preferably, in a not shown embodiment, the first recess 11 and the second protuberance 12 are bulk, and the first recess 11 and the second protuberance 12 are a plurality of, a plurality of the first recesses 11 are divided into many groups, and the first recess 11 in same group arranges at intervals along first direction, a plurality of the second protuberances 12 are divided into many groups, and the second protuberance 12 in same group arranges at intervals along first direction, and organize the first recess 11 more and be arranged alternately successively along second direction with many groups the second protuberance 12, have angle between first direction and second direction.
Preferably, angle is 90 degree.Because angle is 90 degree, thus the first recess 11 and the second protuberance 12 arrange more neat, make flow battery be more prone to assemble.
Preferably, the first recess 11 and the first protuberance 21, the second protuberance 12 and the second recess are cylindrical or hemisphere or cuboid.Certainly, the first recess 11 and the first protuberance 21, the second protuberance 12 and the second recess can also be other shapes that adapt.
Preferably, as shown in Figure 4 and Figure 6, the afflux surface of the first bipolar plates 10 also comprises spaced a plurality of the first electrolyte guiding gutters 30, and at least part of the first electrolyte guiding gutter 30 is arranged on the position of the first recess 11; And/or the afflux surface of the second bipolar plates 20 also comprises spaced a plurality of the second electrolyte guiding gutters 31, and at least part of the second electrolyte guiding gutter 31 is arranged on the position of the first protuberance 21.In embodiment as shown in Figure 4 and Figure 6, the afflux surface of the first bipolar plates 10 also comprises spaced a plurality of the first electrolyte guiding gutters 30.Owing to being provided with a plurality of the first electrolyte guiding gutters 30, thereby electrolyte is flowed along the direction of the first electrolyte guiding gutter 30, thereby improved the mass transfer in liquid phase effect of electrolyte in electrode 50 inside, reduce concentration polarization, improved voltage efficiency and the energy efficiency of flow battery charge and discharge cycles process.
In embodiment as shown in Figure 6, the gap place of the first electrolyte guiding gutter 30 between the first recess 11, the second protuberance 12, the first recess 11 and the second protuberance 12.In embodiment as shown in Figure 4, the gap place of the second electrolyte guiding gutter 31 between the first protuberance 21, the second recess, the first protuberance 21 and the second recess.Preferably, the first electrolyte guiding gutter 30 and the second electrolyte guiding gutter 31 can be selected the arbitrary shapes such as Z-shaped, snakelike.
In embodiment as shown in Figure 7, the first bipolar plates 10 and the second bipolar plates 20 are high-density graphite plates, and electrode 50 is graphite felt, and amberplex 60 is perfluoro sulfonic acid membranes.The first bipolar plates 10 and the second bipolar plates 20 afflux respect to one another surface all are set to skewed, the second inclined plane complementation of the first inclined plane of the first bipolar plates 10 and the second bipolar plates 20, and the first bipolar plates 10 and the second bipolar plates 20 are complementary.When the first bipolar plates 10, two liquid flow frames 40, two electrodes 50, amberplex 60, the second bipolar plates 20 stacking, compress, assembled after, the intersection of the first bipolar plates 10, two liquid flow frames 40, two electrodes 50, amberplex 60, the second bipolar plates 20 is the inclined-plane of coupling fully, effective ion exchange area and the electrochemical reaction area of flow battery are the inclined-plane area, thereby increased, discharge and recharge response area, reduce the internal resistance of flow battery, improved efficiency and the power of flow battery.
Preferably, the first bipolar plates 10 is anodal bipolar plates, the second bipolar plates 20 is negative bipolar plate, the liquid flow frame 40 fitted with anodal bipolar plates is anodal liquid flow frames, the liquid flow frame 40 fitted with negative bipolar plate is negative pole liquid flow frames, the electrode 50 fitted with anodal bipolar plates is anode electrodes, and the electrode 50 fitted with negative bipolar plate is negative electrodes, and amberplex 60 provides passage for the ionic conduction between anode electrode and negative electrode.
As second aspect of the present invention, provide a kind of liquid stream battery stack.Liquid stream battery stack be take above-mentioned flow battery and is base unit, and more piece stacks successively and compresses and be in series.Liquid stream battery stack in the present invention is by being designed to the non-planar structure by the first bipolar plates 10 and the second bipolar plates 20, thereby the recessed embedding coupling of the mutual interlock in interface that realizes electrode 50 and amberplex 60, increased and discharged and recharged response area, reduce the liquid stream battery stack internal resistance, significantly improved efficiency and the power of liquid stream battery stack.Simultaneously, under the condition that the power stage of liquid stream battery stack increases, can effectively save the liquid stream battery stack parts such as end plate, black box, set bolt, and the system unit such as fluid reservoir, infusion pipeline, pump, thereby significantly reduce the cost of liquid stream battery stack.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (12)
1. flow battery, comprise the first bipolar plates (10), the second bipolar plates (20), two liquid flow frames (40), two electrodes (50) and amberplex (60), described amberplex (60) is clamped between two described electrodes (50), two described electrodes (50) are embedded respectively in the cavity of two described liquid flow frames (40), between the afflux respect to one another surface of described the first bipolar plates (10) and described the second bipolar plates (20), form reaction compartment, it is characterized in that, the afflux surface of described the first bipolar plates (10) comprises the first recess (11), the afflux surface of described the second bipolar plates (20) comprises the first protuberance (21) coordinated with described the first recess (11), described two electrodes (50) and described amberplex (60) form the concaveconvex structure adapted with described reaction compartment shape between described the first bipolar plates (10) and described the second bipolar plates (20).
2. flow battery according to claim 1, it is characterized in that, described the first recess (11) is bar shaped, and the two ends of described the first recess (11) extend to the edge of described the first bipolar plates (10) on the described afflux surface of described the first bipolar plates (10).
3. flow battery according to claim 2, is characterized in that, described the first recess (11) is a plurality of, and a plurality of described the first recesses (11) arrange at intervals.
4. flow battery according to claim 2, is characterized in that, described the first recess (11) has U-shaped or V-arrangement cross section.
5. flow battery according to claim 1, it is characterized in that, described the first recess (11) is block, and described the first recess (11) is a plurality of, a plurality of described the first recesses (11) arrange at intervals along first direction and second direction, have angle between described first direction and described second direction.
6. flow battery according to claim 1, it is characterized in that, the afflux surface of described the first bipolar plates (10) also comprises the second protuberance (12), and the afflux surface of described the second bipolar plates (20) also comprises the second recess coordinated with described the second protuberance (12).
7. flow battery according to claim 6, it is characterized in that, described the first recess (11) and described the second protuberance (12) are bulk, and described the first recess (11) and described the second protuberance (12) are a plurality of, and described the second protuberance (12) arranges at intervals with described the first recess (11), a plurality of described the first recesses (11) are arranged alternately along first direction and second direction successively with a plurality of described the second protuberances (12), have angle between described first direction and described second direction.
8. flow battery according to claim 6, it is characterized in that, described the first recess (11) and described the second protuberance (12) are bulk, and described the first recess (11) and described the second protuberance (12) are a plurality of, a plurality of described the first recesses (11) are divided into many groups, and described the first recess (11) in same group arranges at intervals along first direction, a plurality of described the second protuberances (12) are divided into many groups, and described the second protuberance (12) in same group arranges at intervals along described first direction, and organize described the first recess (11) is arranged alternately along second direction with described the second protuberance of many groups (12) successively, between described first direction and described second direction, has angle.
9. according to claim 5 or 7 or 8 described flow batteries, it is characterized in that, described angle is 90 degree.
10. flow battery according to claim 6, is characterized in that, described the first recess (11) and described the first protuberance (21), described the second protuberance (12) and described the second recess are cylindrical or hemisphere or cuboid.
11. according to the described flow battery of any one in claim 1 to 8, it is characterized in that, the described afflux surface of described the first bipolar plates (10) also comprises spaced a plurality of the first electrolyte guiding gutters (30), and at least part of described the first electrolyte guiding gutter (30) is arranged on the position of described the first recess (11); And/or the described afflux surface of described the second bipolar plates (20) also comprises spaced a plurality of the second electrolyte guiding gutters (31), and described the second electrolyte guiding gutter (31) is arranged on the position of described the first protuberance (21) at least partly.
12. a liquid stream battery stack, comprise a plurality of flow batteries, it is characterized in that, described flow battery is the described flow battery of any one in claim 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310376115.6A CN103413960B (en) | 2013-08-26 | 2013-08-26 | Flow battery and liquid stream battery stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310376115.6A CN103413960B (en) | 2013-08-26 | 2013-08-26 | Flow battery and liquid stream battery stack |
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| CN104810538A (en) * | 2014-01-24 | 2015-07-29 | 云廷志 | Integrated manufacturing method of monocell for flow cell |
| CN105322182A (en) * | 2014-08-01 | 2016-02-10 | 大连融科储能技术发展有限公司 | Special-shaped bipolar plate and flow battery pile thereof |
| CN109037725A (en) * | 2018-06-20 | 2018-12-18 | 浙江大学 | A kind of flow battery improving electrolyte distributing homogeneity and electrode structure and method |
| CN109216722A (en) * | 2018-08-28 | 2019-01-15 | 上海交通大学 | Thickness compensation formula fuel cell pack collector plate, fuel cell pack and its optimization method |
| CN111273182A (en) * | 2020-02-24 | 2020-06-12 | 山东科技大学 | Flow battery bipolar plate structure and method for measuring current distribution |
| CN112086654A (en) * | 2019-06-14 | 2020-12-15 | 江苏泛宇能源有限公司 | Graphite felt for flow battery and flow battery using same |
| CN112290046A (en) * | 2020-09-21 | 2021-01-29 | 国家电投集团科学技术研究院有限公司 | Fluid plate frame for flow battery |
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| CN104810538A (en) * | 2014-01-24 | 2015-07-29 | 云廷志 | Integrated manufacturing method of monocell for flow cell |
| CN105322182A (en) * | 2014-08-01 | 2016-02-10 | 大连融科储能技术发展有限公司 | Special-shaped bipolar plate and flow battery pile thereof |
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| CN112086654A (en) * | 2019-06-14 | 2020-12-15 | 江苏泛宇能源有限公司 | Graphite felt for flow battery and flow battery using same |
| CN112086654B (en) * | 2019-06-14 | 2022-04-12 | 江苏泛宇能源有限公司 | Graphite felt for flow battery and flow battery using same |
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| JP2021074652A (en) * | 2019-11-06 | 2021-05-20 | 国立大学法人山口大学 | Ion exchange membrane, production method of ion exchange membrane, and ion exchange membrane cell |
| JP2021074653A (en) * | 2019-11-06 | 2021-05-20 | 国立大学法人山口大学 | Ion exchange membrane, method for manufacturing ion exchange membrane and ion exchange membrane cell |
| CN113036233A (en) * | 2019-12-09 | 2021-06-25 | 中国科学院大连化学物理研究所 | Zinc-based single cell electrode structure and application |
| CN113036233B (en) * | 2019-12-09 | 2022-10-04 | 中国科学院大连化学物理研究所 | Zinc-based single cell electrode structure and application |
| CN111273182A (en) * | 2020-02-24 | 2020-06-12 | 山东科技大学 | Flow battery bipolar plate structure and method for measuring current distribution |
| CN112290046A (en) * | 2020-09-21 | 2021-01-29 | 国家电投集团科学技术研究院有限公司 | Fluid plate frame for flow battery |
| CN112290046B (en) * | 2020-09-21 | 2024-06-07 | 北京和瑞储能科技有限公司 | Fluid plate frame for flow battery |
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